EP1055571B1 - Motor device to be easily fixed to a frame - Google Patents

Motor device to be easily fixed to a frame Download PDF

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Publication number
EP1055571B1
EP1055571B1 EP00107509A EP00107509A EP1055571B1 EP 1055571 B1 EP1055571 B1 EP 1055571B1 EP 00107509 A EP00107509 A EP 00107509A EP 00107509 A EP00107509 A EP 00107509A EP 1055571 B1 EP1055571 B1 EP 1055571B1
Authority
EP
European Patent Office
Prior art keywords
nut
recess portion
frame
bolt
output shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00107509A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1055571A3 (en
EP1055571A2 (en
Inventor
Keisuke c/o Asmo Co. Ltd. Kanazawa
Naohito c/o Asmo Co. Ltd. Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asmo Co Ltd
Original Assignee
Asmo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asmo Co Ltd filed Critical Asmo Co Ltd
Publication of EP1055571A2 publication Critical patent/EP1055571A2/en
Publication of EP1055571A3 publication Critical patent/EP1055571A3/en
Application granted granted Critical
Publication of EP1055571B1 publication Critical patent/EP1055571B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/0413—Modular wiper assembly
    • B60S1/0422—Modular wiper assembly having a separate transverse element
    • B60S1/0427—Modular wiper assembly having a separate transverse element characterised by the attachment of the wiper motor holder to the transverse element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/0413—Modular wiper assembly
    • B60S1/0422—Modular wiper assembly having a separate transverse element
    • B60S1/0425—Modular wiper assembly having a separate transverse element characterised by the attachment of the wiper shaft holders to the transverse element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings

Definitions

  • the present invention relates to a motor device having a motor and a rotation speed reduction mechanism for driving a wind shield wiper with a construction that the motor device is easily fixed to a wiper frame.
  • the gear housing In a conventional motor device having a gear housing in which a reduction mechanism for reducing a rotation speed of a motor is housed, the gear housing is generally made through forming processing such as aluminum die-casting or resin molding. As it is necessary to form a shaft hole by which an output shaft of the reduction mechanism is held so as to penetrate through the gear housing, the gear housing is formed preferably in a manner that dies to be used for the forming processing may be parted in an axial direction of the output shaft thereof.
  • the gear housing 100 is provided with installation legs 104 for fixing the motor device.
  • the installation legs 104 are fixed to a flat surface portion 102A of a frame 102 having a one side open square shaped cross section.
  • Each of the installation legs 104 is provided with a through hole 108 into which a bolt 106 is inserted on fixing to the frame 102.
  • the through hole 108 is formed to extend in a direction same as the direction in which the dies are parted in view of easily splitting out the dies after forming.
  • the gear housing 100 is fixed to the flat surface portion 102A of the frame 102 by the bolt 106 and a nut 110, it is preferable, as shown in Fig. 10, that the flat surface portion 102A is faced in parallel with the output shaft of the reduction mechanism in consideration of a strength of the frame 120 for supporting the wiper device.
  • the gear housing 100 may be provided, as shown in JP-U-5-40063, separately with a bracket made by press forming a plate in a given shape.
  • this causes a problem that more manufacturing time and component parts are required, resulting in more manufacturing cost.
  • the gear housing 100 is provided integrally with installation legs 114 having through holes 112 extending perpendicularly to the output shaft of the gear housing 100, as shown in Fig. 10, the through holes 112 may not be formed in the gear housing 100 simply by upper and lower dies. In this case, a moving core in the dies becomes necessary for forming the through holes 112 so that the construction of the dies becomes complicated.
  • the present invention has been made in view of the above mentioned problem, and an object of the present invention is to provide a motor device having a reduction mechanism in which an installation leg with a through hole formed nearly perpendicularly to an axis of an output shaft of the reduction mechanism is integrally formed with a gear housing without using a special moving core. As a result, while the manufacturing cost becomes less, a work for fixing the gear housing to a frame becomes easier.
  • the motor device is comprised of a motor, a reduction mechanism having an output shaft and a housing with an installation portion for housing the reduction mechanism so as to have the output shaft penetrate therethrough.
  • the housing is formed integrally with the installation portion by a pair of dies parting in an axial direction of the output shaft.
  • the installation portion is composed of a side surface coming in surface contact with a seat surface of the frame, a first recess portion for holding a nut whose entire inner surface is opened at least on one side of the housing in the axial direction of the output shaft and a second recess portion for inserting a bolt whose entire inner surface is opened on the other side of the housing in the axial direction of the output shaft and which extends from the side surface to the first recess portion nearly perpendicularly to the axial direction of the output shaft.
  • the housing may be fixed to the frame by inserting the bolt through a penetrating hole of the frame into the second recess portion and screwing the bolt into the nut housed in the first recess portion.
  • the through hole may be formed merely by the upper and lower dies without using a moving core.
  • the housing may be easily manufactured at lower cost.
  • the inner surface has a nut holding surface opened only on the one side of the housing in an opposing direction to a gravity so that, just by dropping the nut into the first recess portion, the nut may be housed in the first recess portion with its own weight. This makes the fastening work easier.
  • the inner surface of the first recess portion has a retaining surface coming in contact with an outer surface of the nut and preventing the nut from rotating together with the bolt when the bolt is screwed into the nut. This construction serves to fix easily the housing to the frame without holding the nut in one hand.
  • the first recess portion is provided at the inner surface on a side opposite to the second recess portion with a concave portion at which a leading end of the bolt is housed when the bolt is fastened to penetrate through the nut.
  • the concave portion With the concave portion, the bolt may be further screwed into the nut even after the leading end of the bolt penetrates through the nut.
  • the motor device may be reliably fixed to the frame irreverent to a length of the bolt.
  • a wiper device 10 has a pair of pivot holders 12. Each of the pivot holders 12 is provided with a cylindrical portion 14 into which a pivot shaft 16 is inserted and which rotatably supports the pivot shaft 16. A pivot lever 18 is fixed to a leading end of the pivot shaft 16 so that the pivot shaft 16 may rotate according to a swinging movement of the pivot lever 18.
  • Installation holes 20 are formed at corners of the respective pivot holders 12.
  • the wiper device 10 is fixed to a vehicle body by fastening bolts inserted into the respective installation holes 20, as shown in Fig. 2.
  • Each of pivot holders 12 is provided with a connecting shaft 22 on a side opposite to the installation hole 20.
  • the connecting shaft 22 is a circular cross sectional pure shaft and has at the leading end thereof a first connecting portion 26 to be fitted into a pipe frame 24 to be described later.
  • the connecting portions 26 are respectively provided with concave 28.
  • the connecting shaft 22 is not limited to the circular cross sectional pure shaft but may be a ring shaped cross sectional pipe shaft.
  • the pipe frame 24 has at each of both longitudinal ends thereof a second connecting portion 30, which corresponds to the connecting shaft 22.
  • the second connecting portion 30 has a ring shaped cross section and is fitted with and fixed to the first connecting portion 26 of the connecting shaft 22 by caulking at the places of the concave 28.
  • the pipe frame 24 has an installation base 32 at a longitudinal intermediate portion. As shown in Fig. 6, the installation base 32 has a one side open square shaped cross section and one side surface of the installation base 32 constitutes a flat installation seat 34. Though a longitudinal center portion of the pipe frame 24 has the one side open square shaped cross section formed by pressing without hollowness, the other longitudinal portion of the pipe frame 24 has a cross section having a hollowness, a shape of which is gradually variable toward opposite longitudinal ends of the pipe frame 24, and each of the connecting portions 26 at the opposite longitudinal ends thereof has a ring shaped cross section. Further, as shown in Fig.
  • the installation base 32 is provided with a pair of installation holes 36 at positions corresponding to those of through holes 64 to be described later for fixing a driving source to be also described later.
  • the installation base 32 may be provided with an installation groove extending in a longitudinal direction thereof so that a fixing position of the driving source relative to the installation base 32 may be adjustable in a longitudinal direction of the installation base 32
  • a motor device 38 as the driving source is mounted on the flat installation seat 34 at the installation base 32 of the pipe frame 24.
  • the motor device 38 is composed of a motor 42, a reduction mechanism (not shown) having an output shaft 82 and integrally provided with the motor 42 for reducing a rotation speed of the motor 42 with gears and a gear housing 44 for housing the reduction mechanism so as to have the output shaft 82 penetrate therethrough.
  • the gear housing 44 is provided with a pair of installation legs 40 formed integrally with and protruding from the gear housing 44 for mounting the motor device 38 on the flat installation seat 34.
  • Fig. 3 shows a top plan view of a whole structure of the gear housing 44A
  • Fig. 4 shows a bottom view thereof
  • Fig. 5 shows a side view thereof, respectively.
  • the installation legs 40 are formed at opposite side portions of the gear housing 44. As the respective structures of the installation legs 40 are same to each other, one of the installation legs 40 is described below.
  • the installation leg 40 is composed of a rectangular parallelepiped body portion 48 and an installation piece 46 formed at a leading end of the body portion 48 so as to extrude therefrom.
  • the body portion 48 is provided with a nut holding portion 56 having an opening 52 opened on one side of the body portion 48 in one (C1 direction in the drawing) of opposite directions (C1 and C2 directions in the drawing) in which a pair of dies 50 are parted when the gear housing 44 is formed.
  • the installation piece 46 comes in face contact with the flat installation seat 34 and is fixed thereto by a fastening force acting perpendicularly to an axial direction of the output shaft 82 of the reduction mechanism (in D direction in the drawing).
  • the nut holding portion 56 is so arranged on one side of the gear housing 44 that the opening 52 of the nut holding portion 56 is opened in an opposing direction to a gravity.
  • a hexagon nut 54 having a fastening hole 58 is inserted into the nut holding portion 56 through the opening 52 and the nut 54 is held by the nut holding portion 56 in a state that the fastening hole 58 faces in a direction nearly perpendicular to an axis of the output shaft 82 (refer to Fig. 2) of the reduction mechanism.
  • the nut holding portion 56 is formed by an upper side die 60 of the dies 50. As shown in fig. 3, a distance W between opposite inner walls (the opening 52) of the nut holding portion is equal to or slightly larger than a minimum outer diameter (width across flats) of the nut 54 but smaller than a maximum outer diameter (width across corners) of the nut 54.
  • the opposite inner walls of the nut holding portion 56 comes in contact with outer circumference surface of the nut 54 inserted therein and serves to prevent the nut 54 from rotating together with a volt 62 (refer to Fig. 6) when the bolt 62 is screwed into the nut 54.
  • the nut holding portion 56 is formed in such a shape that the nut 54 may be nearly entirely housed in the nut holding portion 56 but the nut 54 may not pass through the body portion 48 due to a nut holding surface 57 (refer to Fig. 8) opened only on one side of the body portion 48 in an axial direction of the output shaft 82. Unless the nut 54 may not pass through the body portion 48, the nut holding portion 56 may be partly opened on the other side of the body portion 48 in an axial direction of the output shaft 82, too. Therefore, the nut 54 inserted in the nut holding portion 56 from the one side of the body portion 40 does not fall down, even if the nut 54 is not held in one hand.
  • a concave portion 68 is provided at a bottom wall of the nut holding portion 56 on a side opposite to the through hole 64 through which the bolt 62 is inserted.
  • the concave portion 68 may house a leading end of the bolt 62 that penetrates through the nut 54.
  • the installation piece 46 is provided with a through hole 64 having an opening 72 opened in the other (C2 direction) of the opposite directions in which the dies 50 are parted.
  • the nut holding portion 56 and the through hole 64 constitute a communication path extending in a direction perpendicular to the axial direction D (die parting directions C1 and C2 of the dies 50) of the output shaft 82.
  • the through hole 64 is formed in a letter U groove shape by a lower die 74 of the dies 50.
  • a width T (corresponding to a width T of the opening 72) of the through hole 64 is smaller than a minimum diameter (with across flats) of a hexagon head 76 of the bolt 62 and also smaller than a width W (corresponding to a width T of the opening 52) of the nut holding portion 56 and smaller than the minimum outer diameter of the nut 54. Therefore, when the bolt 62 is screwed into the nut inserted into the nut holding portion 56 through the installation hole 36 and the through hole 64, a side surface of the nut 54 comes partly in contact with an inner wall 80 (refer to Fig. 6) of the nut holding portion on a side of the through hole 64 and a further movement of the nut 54 is stopped thereby. As a result, the gear housing 44 of the motor device 38 is firmly fixed to the flat installation seat 34 of the pipe frame 24.
  • a crank arm 84 is fixed to a leading end of the output shaft 82 of the motor device 38.
  • First and second link rods 88 and 90 are connected to a leading end of the crank arm 84 via a joint portion 86.
  • the first link rod 88 is connected via a ball joint 92 to the pivot lever 18 at the leading end of the pivot shaft 16 held by the pivot holder 12.
  • the second link rod 90 is also connected via a ball joint 92 to the pivot lever 18 at the leading end of the pivot shaft 16 held by the pivot holder 12.
  • a rotation of the crank arm 84 driven by the motor 42 is transmitted to the respective pivot shafts 16 via the respective first and second link rods 88 and 90 and the respective pivot levers 18 so that a pair of blades and arms (not shown) attached to the respective pivot shafts 16 may make swing movements at places apart from each other.
  • the crank arm 84, the first and second link rods 88 and 90 and the pivot levers 18 constitute a link mechanism.
  • the installation legs 40 are formed integrally with the gear housing 44 by aluminum die casting method. That is, the installation legs 40, as shown in Fig. 8, is formed by the dies 50 that may be parted in the axial direction of the output shaft 82 of the reduction mechanism and the nut holding portion 56 is formed by the upper die 60 and the through hole 64 is formed by the lower die 74.
  • each of the installation legs 40 is provided with a communication path extending from the through hole 64 to the nut holding portion 56 perpendicularly to the axial direction D of the output shaft 82.
  • the communication path mentioned above may be formed only by the upper and lower dies without using a special moving core in the dies so that the gear housing 44 may be manufactured at lower cost.
  • the installation legs 40 of the gear housing 44 is fixed to the pipe frame 24 by fastening perpendicularly to the axial direction D of the output shaft 82 in a manner that a holding surface of the nut holding portion 56 is opened in the opposing direction to the gravity.
  • the volt 62 is inserted into the through hole 64 trough the installation hole 36 of the pipe frame 24 via washer (not shown in the drawing). Further, the bolt 62 inserted into the through hole 64 is screwed to the nut 54 primarily housed in the nut holding portion 56 by further passing through the through hole 64.
  • the nut 54 may be inserted to be housed into the nut holding portion 56 by its own weight. Further, it is not necessary to have some means for preventing the nut 54 from falling down from the gear housing, which is beneficial from manufacturing cost and time standpoints.
  • the nut 54 is prevented from rotating together with the bolt 62, when screwed. Moreover, as the leading end of the bolt 62 penetrated through the nut 54 may be housed in the concave portion 68, rigid fastening may be assured, even if a length of the bolt 62 fluctuates.
  • the motor device 38 is fixed rigidly to the pipe frame 24.
  • Fig. 11 is an exploded partial view showing a state that the gear housing 44 of the motor device according to the second embodiment is installed on the pipe frame 24.
  • a column shaped projection 200 is provided at a surface J of the installation piece 46 which comes in face contact with the flat installation seat 34 when the gear housing 44 is fixed to the pipe frame 24.
  • the projection 200 is formed nearly perpendicularly to the axial direction D of the output shaft 82 similarly to the through hole 64.
  • the flat installation seat 34 is provided with a fitting hole 300 into which the projection 200 is inserted.
  • fitting the projection 200 into the fitting hole 300 makes automatically the through hole 64 position relatively to the installation hole 36. Further, the fitting of the projection200 to the fitting hole 300 serves to prevent the fastening by the bolt 62 from being loosed during actual use of the motor device.
  • the pipe frame 24 receives bending stresses repeatedly during the actual use of the motor device, a repeated slight rotation of the motor device 38 relative to the pipe frame 24 is likely to occur and, thereby, to cause to loose the fastening of the installation leg 40 with the pipe frame 24 by the bolt 62.
  • the installation leg 40 and the pipe frame 24 are held at least at two points of the projections 200 and/or the bolts 62, the relative rotation of the installation leg 40 to the pipe frame 24 does not occurs so that loosing the bolt may be prevented.
  • a plurality of the projections 200 and fitting holes 300 may be provided correspondingly to each of the installation legs 40.
  • the installation leg is composed of a side surface (46) coming in surface contact with a frame, a first recess portion (56) for holding a nut whose entire inner surface is opened at least on one side of the housing in a die parting direction of the dies and a second recess portion (64)for inserting a bolt whose entire inner surface is opened on the other side of the housing in the die parting direction of the dies and which extends from the side surface to the first recess portion nearly perpendicularly to the axial direction of the output shaft.
EP00107509A 1999-05-28 2000-04-06 Motor device to be easily fixed to a frame Expired - Lifetime EP1055571B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14995599A JP3316192B2 (ja) 1999-05-28 1999-05-28 モータ装置
JP14995599 1999-05-28

Publications (3)

Publication Number Publication Date
EP1055571A2 EP1055571A2 (en) 2000-11-29
EP1055571A3 EP1055571A3 (en) 2002-06-05
EP1055571B1 true EP1055571B1 (en) 2003-06-18

Family

ID=15486261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107509A Expired - Lifetime EP1055571B1 (en) 1999-05-28 2000-04-06 Motor device to be easily fixed to a frame

Country Status (4)

Country Link
US (1) US6553606B1 (ja)
EP (1) EP1055571B1 (ja)
JP (1) JP3316192B2 (ja)
DE (1) DE60003365T2 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007350A1 (de) * 2004-02-16 2005-09-22 Volkswagen Ag Fahrzeug mit einer Scheibenwischeranlage
DE102004060429A1 (de) * 2004-12-14 2006-07-06 Magna Closures (Germany) Gmbh Wischeranordnung
DE102006061677A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Scheibenwischvorrichtung
JP4938526B2 (ja) * 2007-03-28 2012-05-23 株式会社ミツバ 車両用ワイパ装置
DE102007018461B4 (de) * 2007-04-19 2017-10-19 Robert Bosch Gmbh An einem Trägerrohr befestigter Scheibenwischanlagenantrieb
DE102008001828A1 (de) * 2007-05-18 2008-12-18 Asmo Co., Ltd., Kosai-shi Motoreinrichtung und Wischervorrichtung
DE102007061105B4 (de) * 2007-12-19 2018-05-03 Robert Bosch Gmbh Befestigungsrohr sowie Wischanlage
DE102007061721A1 (de) * 2007-12-20 2009-06-25 Robert Bosch Gmbh Wischanlage für ein Kraftfahrzeug
US8819888B2 (en) * 2012-06-22 2014-09-02 Mitsuba Corporation Wiper apparatus
CN103569053B (zh) * 2012-07-18 2017-03-08 博世汽车部件(长沙)有限公司 刮水器轴承、刮水器驱动机构固定装置以及噪声解耦‑减振装置

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Publication number Priority date Publication date Assignee Title
ES274310Y (es) 1983-09-13 1985-01-01 Frape Behr, S.A. Disposicion para el montaje de una tuerca
JPS63104314A (ja) 1986-10-21 1988-05-09 松下電器産業株式会社 チツプコンデンサの電極端子の形成方法
JPH086641Y2 (ja) 1990-11-02 1996-02-28 株式会社三ツ葉電機製作所 パイプ式モジユラワイパ装置のパイプ締結構造
JP2544115Y2 (ja) * 1991-07-30 1997-08-13 株式会社ミツバ モジユラ型ワイパ装置の躯体取付け構造
JP2707375B2 (ja) 1991-07-30 1998-01-28 株式会社ミツバ モジユラ型ワイパ装置
JPH0540063A (ja) 1991-08-05 1993-02-19 Matsushita Electric Works Ltd 感温センサ
JPH0540063U (ja) 1991-10-31 1993-05-28 株式会社三ツ葉電機製作所 車両用ワイパ装置におけるブラケツト構造
JP3235444B2 (ja) 1996-01-08 2001-12-04 三菱電機株式会社 車両用交流発電機およびその製造方法
FR2761318B1 (fr) 1997-03-28 1999-05-14 Valeo Systemes Dessuyage Systeme d'essuyage comportant une traverse qui supporte un ensemble motoreducteur
GB2325617A (en) 1997-05-13 1998-12-02 Trico Products Corp Improvements relating to a gearbox support
FR2767102B1 (fr) 1997-08-11 1999-10-01 Valeo Systemes Dessuyage Dispositif d'entrainement d'un systeme d'essuyage pour une vitre de vehicule automobile
JP3215671B2 (ja) 1998-07-24 2001-10-09 アスモ株式会社 ワイパ装置及びワイパ装置の中空フレームの製造方法

Also Published As

Publication number Publication date
JP3316192B2 (ja) 2002-08-19
EP1055571A3 (en) 2002-06-05
DE60003365T2 (de) 2004-04-22
JP2000341899A (ja) 2000-12-08
DE60003365D1 (de) 2003-07-24
US6553606B1 (en) 2003-04-29
EP1055571A2 (en) 2000-11-29

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